/* =============================================================
   Staltec Finance Hub — App-Patterns
   Extrahiert aus Brand/demo.html.
   Erweitert die Tokens aus staltec-brand.css um App-Shell, Stats,
   Tabellen, Tabs, Forms, Modals, Status-Badges.
   ============================================================= */

  /* =============================================================
     Demo: Liquiditäts-Dashboard
     Verwendet ausschließlich Tokens + Komponenten aus dem System.
     ============================================================= */

  body { background: var(--color-bg-app); min-height: 100vh; }

  /* --- Shell --- */
  .shell { display: grid; grid-template-columns: var(--layout-sidebar-width) minmax(0, 1fr);
    grid-template-rows: var(--layout-header-height) 1fr;
    grid-template-areas: "side head" "side main";
    min-height: 100vh;
  }
  .shell__side {
    grid-area: side; background: var(--color-bg-inverse); color: var(--color-text-on-inverse);
    padding: var(--space-4) var(--space-3) var(--space-3);
    display: flex; flex-direction: column; gap: 1px;
    border-right: 1px solid rgba(255,255,255,0.04);
  }
  .side-search {
    height: 30px; width: 100%; margin: 0 0 var(--space-3);
    padding: 0 var(--space-3) 0 28px;
    background: rgba(255,255,255,0.06) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-opacity='0.55' stroke-width='2'><circle cx='11' cy='11' r='7'/><path d='M21 21l-4.35-4.35'/></svg>") no-repeat 10px center;
    border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius-sm);
    color: #fff; font-family: var(--font-family-sans); font-size: var(--font-size-xs);
  }
  .side-search::placeholder { color: rgba(255,255,255,0.45); }
  .side-search:focus { outline: none; border-color: rgba(95,167,143,0.6); background-color: rgba(255,255,255,0.08); box-shadow: 0 0 0 3px rgba(95,167,143,0.15); }
  .side-search-wrap { position: relative; }
  .side-search-kbd {
    position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
    font-family: var(--font-family-mono); font-size: 10px; color: rgba(255,255,255,0.4);
    border: 1px solid rgba(255,255,255,0.10); border-radius: 2px;
    padding: 1px 5px; line-height: 1; pointer-events: none; margin-bottom: var(--space-3);
  }
  .shell__brand {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 var(--space-2) var(--space-3); color: var(--color-text-on-inverse);
  }
  .shell__brand-mark { display: flex; align-items: center; gap: var(--space-2); flex: 0 1 auto; min-width: 0; }
  .shell__brand-mark svg { height: 22px; width: auto; display: block; }
  .shell__brand-env {
    font-size: 9px; letter-spacing: var(--letter-spacing-caps);
    text-transform: uppercase; font-weight: var(--font-weight-semibold);
    color: rgba(255,255,255,0.55); flex-shrink: 0;
    padding: 2px 5px; border: 1px solid rgba(255,255,255,0.18); border-radius: 2px;
  }
  .shell__brand-sub {
    font-size: var(--font-size-2xs); letter-spacing: var(--letter-spacing-caps);
    text-transform: uppercase; color: rgba(255,255,255,0.4); font-weight: var(--font-weight-semibold);
    padding: 0 var(--space-2) var(--space-3);
    margin-bottom: var(--space-2);
  }
  .nav-group {
    font-size: 10px; text-transform: uppercase;
    letter-spacing: var(--letter-spacing-caps); color: rgba(255,255,255,0.35);
    margin: var(--space-4) var(--space-2) var(--space-1); font-weight: var(--font-weight-semibold);
  }
  .nav-group:first-of-type { margin-top: var(--space-1); }
  .nav-item {
    display: flex; align-items: center; gap: var(--space-3); height: 30px;
    padding: 0 var(--space-2); border-radius: var(--radius-sm);
    color: rgba(255,255,255,0.70); text-decoration: none; font-size: var(--font-size-sm);
    position: relative; transition: background var(--transition-fast), color var(--transition-fast);
  }
  .nav-item__icon {
    width: 16px; height: 16px; flex-shrink: 0; color: rgba(255,255,255,0.55);
    transition: color var(--transition-fast);
  }
  .nav-item:hover { background: rgba(255,255,255,0.05); color: #fff; }
  .nav-item:hover .nav-item__icon { color: #fff; }
  .nav-item[aria-current="page"] {
    background: rgba(255,255,255,0.07); color: #fff; font-weight: var(--font-weight-semibold);
  }
  .nav-item[aria-current="page"]::before {
    content: ""; position: absolute; left: -12px; top: 6px; bottom: 6px; width: 2px;
    background: var(--color-accent); border-radius: 0 1px 1px 0;
  }
  .nav-item[aria-current="page"] .nav-item__icon { color: var(--color-accent); }
  .nav-item__count {
    margin-left: auto; font-size: 10px; font-family: var(--font-family-mono);
    color: rgba(255,255,255,0.55); padding: 0 5px; height: 16px; line-height: 16px;
    background: rgba(255,255,255,0.06); border-radius: 2px;
    font-weight: var(--font-weight-medium);
  }
  .nav-item[aria-current="page"] .nav-item__count { background: rgba(95,167,143,0.18); color: #b3d5c8; }

  .shell__side-foot {
    margin-top: auto; padding: var(--space-3) var(--space-2) 0;
    border-top: 1px solid rgba(255,255,255,0.06);
    display: flex; flex-direction: column; gap: var(--space-2);
  }
  .side-foot-row { display: flex; align-items: center; gap: var(--space-2); font-size: var(--font-size-xs); }
  .side-foot-row__avatar {
    width: 24px; height: 24px; border-radius: 50%;
    background: rgba(255,255,255,0.10); color: #fff;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 9px; font-weight: var(--font-weight-semibold); flex-shrink: 0;
  }
  .side-foot-row__meta { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
  .side-foot-row__name { color: #fff; font-weight: var(--font-weight-medium); font-size: var(--font-size-xs); }
  .side-foot-row__role { color: rgba(255,255,255,0.45); font-size: 10px; font-family: var(--font-family-mono); letter-spacing: var(--letter-spacing-caps); text-transform: uppercase; }
  .side-foot-status {
    display: flex; align-items: center; justify-content: space-between;
    font-size: 10px; font-family: var(--font-family-mono); letter-spacing: var(--letter-spacing-caps); text-transform: uppercase;
    color: rgba(255,255,255,0.4);
  }
  .side-foot-status__dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent); box-shadow: 0 0 0 3px rgba(95,167,143,0.18); }

  .shell__header {
    grid-area: head; background: var(--color-bg-surface); border-bottom: 1px solid var(--color-divider);
    display: flex; align-items: center; justify-content: space-between; padding: 0 var(--space-6);
    position: sticky; top: 0; z-index: var(--z-sticky);
  }
  .crumb { font-size: var(--font-size-sm); color: var(--color-text-muted); display: flex; align-items: center; gap: var(--space-2); }
  .crumb__sep { color: var(--color-border-strong); }
  .crumb strong { color: var(--color-text-primary); font-weight: var(--font-weight-semibold); }

  .header-search {
    width: 280px; height: 30px; padding: 0 var(--space-3) 0 32px;
    border: 1px solid var(--color-border); border-radius: var(--radius-md);
    background: var(--color-bg-surface-alt) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235f6f68' stroke-width='2'><circle cx='11' cy='11' r='7'/><path d='M21 21l-4.35-4.35'/></svg>") no-repeat 10px center;
    font-family: var(--font-family-sans); font-size: var(--font-size-sm);
  }
  .header-search:focus { outline: none; border-color: var(--color-accent); box-shadow: var(--shadow-focus); }
  .header-actions { display: flex; align-items: center; gap: var(--space-3); }
  .user-chip {
    display: inline-flex; align-items: center; gap: var(--space-2);
    padding: var(--space-1) var(--space-2) var(--space-1) var(--space-1);
    border: 0; background: transparent; color: var(--color-text-primary);
    border-radius: var(--radius-md); cursor: pointer;
    font: inherit; transition: background var(--transition-fast);
  }
  .user-chip:hover { background: var(--color-bg-surface-alt); }
  .user-chip:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
  .user-chip__avatar {
    width: 26px; height: 26px; border-radius: 50%;
    background: var(--color-bg-inverse); color: var(--color-text-on-inverse);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 10px; font-weight: 600; letter-spacing: 0.02em;
  }
  .user-chip__name { font-size: var(--font-size-sm); font-weight: 500; line-height: 1; }
  .user-chip__chev { width: 10px; height: 10px; color: var(--color-text-muted); margin-left: 2px; }

  /* --- Main --- */
  .main { grid-area: main; padding: var(--space-8) var(--space-8) var(--space-12); max-width: var(--layout-max-width); width: 100%; }

  .page-head {
    display: flex; justify-content: space-between; align-items: flex-end;
    margin-bottom: var(--space-6); gap: var(--space-6); flex-wrap: wrap;
  }
  .page-head__title { font-size: var(--font-size-3xl); font-weight: var(--font-weight-bold);
    letter-spacing: var(--letter-spacing-tight);
  }
  .page-head__meta { font-size: var(--font-size-sm); color: var(--color-text-muted); margin-top: var(--space-1);
    display: flex; align-items: center; gap: var(--space-3);
  }
  .page-head__meta-dot { width: 4px; height: 4px; border-radius: 50%; background: var(--color-border-strong); }
  .page-head__actions { display: flex; gap: var(--space-2); }

  /* --- Stats --- */
  .stats-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); margin-bottom: var(--space-6); }
  .stats-row--8 { grid-template-columns: repeat(4, 1fr); }
  .stats-row--8 .stat__value { font-size: var(--font-size-2xl); }
  .stats-row--8 .stat { padding: var(--space-4); }
  .stat {
    background: var(--color-bg-surface); border: 1px solid var(--color-border);
    border-radius: var(--radius-lg); padding: var(--space-5) var(--space-5) var(--space-4);
    display: flex; flex-direction: column; gap: var(--space-2);
    position: relative; overflow: hidden;
  }
  .stat--accent::before {
    content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
    background: var(--color-status-error);
  }
  .stat__label {
    font-size: var(--font-size-2xs); font-weight: var(--font-weight-semibold);
    text-transform: uppercase; letter-spacing: var(--letter-spacing-caps);
    color: var(--color-text-muted);
    display: flex; align-items: center; gap: var(--space-2); justify-content: space-between;
  }
  .stat__value {
    font-size: var(--font-size-4xl); font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight); letter-spacing: var(--letter-spacing-tight);
    font-variant-numeric: tabular-nums;
  }
  .stat__value--negative { color: var(--color-status-error); }
  .stat__value--positive { color: var(--color-status-ok); }
  .stat__sub {
    display: flex; justify-content: space-between; align-items: center;
    font-size: var(--font-size-xs); color: var(--color-text-muted); margin-top: var(--space-1);
  }
  .stat__delta { font-variant-numeric: tabular-nums; font-weight: var(--font-weight-medium); }
  .stat__delta--up   { color: var(--color-status-ok); }
  .stat__delta--down { color: var(--color-status-error); }

  /* Mini bar chart inside stat */
  .sparkbar { display: flex; align-items: flex-end; gap: 2px; height: 28px; margin-top: var(--space-2); }
  .sparkbar__bar { flex: 1; background: var(--color-border); border-radius: 1px; min-height: 2px; }
  .sparkbar__bar--neg { background: var(--color-status-error-subtle); border-bottom: 2px solid var(--color-status-error); }
  .sparkbar__bar--pos { background: var(--color-accent-subtle); border-bottom: 2px solid var(--color-accent); }
  .sparkbar__bar--current { outline: 1px solid var(--color-text-primary); outline-offset: 1px; }

  /* --- Section card --- */
  .section {
    background: var(--color-bg-surface); border: 1px solid var(--color-border);
    border-radius: var(--radius-lg); margin-bottom: var(--space-6);
  }
  .section__head {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--color-divider);
    display: flex; justify-content: space-between; align-items: center; gap: var(--space-4);
    flex-wrap: wrap;
  }
  .section__title {
    font-size: var(--font-size-md); font-weight: var(--font-weight-semibold);
    display: flex; align-items: center; gap: var(--space-3);
  }
  .section__title-meta {
    font-size: var(--font-size-xs); font-weight: var(--font-weight-regular);
    color: var(--color-text-muted); font-family: var(--font-family-mono);
    letter-spacing: var(--letter-spacing-caps); text-transform: uppercase;
  }
  .section__body { padding: var(--space-5); }
  .section__body--flush { padding: 0; }

  /* --- Tabs --- */
  .tabs { display: inline-flex; background: var(--color-bg-surface-alt);
    border: 1px solid var(--color-border); border-radius: var(--radius-md);
    padding: 3px; gap: 2px;
  }
  .tabs__item {
    border: 0; background: transparent; color: var(--color-text-secondary);
    font: inherit; font-size: var(--font-size-sm); font-weight: var(--font-weight-medium);
    padding: 0 var(--space-4); height: 26px; border-radius: var(--radius-sm); cursor: pointer;
    transition: all var(--transition-fast);
  }
  .tabs__item:hover { color: var(--color-text-primary); }
  .tabs__item[aria-selected="true"] {
    background: var(--color-bg-surface); color: var(--color-text-primary);
    box-shadow: var(--shadow-sm); font-weight: var(--font-weight-semibold);
  }

  /* --- Table --- */
  table.data-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
  .data-table th, .data-table td {
    padding: var(--space-3) var(--space-4); text-align: left; font-size: var(--font-size-sm);
    border-bottom: 1px solid var(--color-divider);
  }
  .data-table th {
    background: var(--color-bg-surface-alt);
    font-size: var(--font-size-2xs); text-transform: uppercase; letter-spacing: var(--letter-spacing-caps);
    color: var(--color-text-muted); font-weight: var(--font-weight-semibold);
    border-bottom: 1px solid var(--color-border);
  }
  .data-table th:first-child, .data-table td:first-child { padding-left: var(--space-5); }
  .data-table th:last-child,  .data-table td:last-child  { padding-right: var(--space-5); }
  .data-table tbody tr:hover td { background: var(--color-bg-surface-alt); }
  .data-table td.num, .data-table th.num { text-align: right; font-variant-numeric: tabular-nums; }
  .data-table td.neg { color: var(--color-status-error); }
  .data-table td.pos { color: var(--color-text-primary); }
  .data-table tbody tr.row--past td { color: var(--color-text-muted); background: var(--color-bg-surface-alt); }
  .data-table tbody tr.row--past td.neg { color: #c79590; }
  .data-table tbody tr.row--current td { background: var(--color-accent-subtle); font-weight: var(--font-weight-semibold); }
  .data-table tfoot td {
    font-weight: var(--font-weight-semibold);
    background: var(--color-bg-surface-alt);
    border-top: 1px solid var(--color-border);
    border-bottom: none;
  }
  .month-label { display: flex; align-items: baseline; gap: var(--space-2); }
  .month-label__year { font-size: var(--font-size-xs); color: var(--color-text-muted); font-family: var(--font-family-mono); }

  /* --- Badge --- */
  .badge {
    display: inline-flex; align-items: center; gap: var(--space-2);
    height: 22px; padding: 0 var(--space-2);
    font-size: var(--font-size-xs); font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-sm);
    background: var(--color-bg-sunken); color: var(--color-text-secondary);
    font-variant-numeric: tabular-nums;
  }
  .badge__dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
  .badge--ok    { background: var(--color-status-ok-subtle);    color: var(--color-status-ok); }
  .badge--warn  { background: var(--color-status-warn-subtle);  color: var(--color-status-warn); }
  .badge--error { background: var(--color-status-error-subtle); color: var(--color-status-error); }
  .badge--info  { background: var(--color-status-info-subtle);  color: var(--color-status-info); }

  /* --- Buttons --- */
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
    height: 32px; padding: 0 var(--space-3);
    font-family: var(--font-family-sans); font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold); line-height: 1;
    border: 1px solid transparent; border-radius: var(--radius-md);
    cursor: pointer; transition: all var(--transition-fast); white-space: nowrap;
    background: transparent; color: var(--color-text-primary); text-decoration: none;
  }
  .btn--primary { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }
  .btn--primary:hover { background: var(--color-accent-hover); border-color: var(--color-accent-hover); }
  .btn--secondary { background: var(--color-bg-surface); color: var(--color-text-primary); border-color: var(--color-border-strong); }
  .btn--secondary:hover { background: var(--color-bg-sunken); border-color: var(--color-text-muted); }
  .btn--ghost { color: var(--color-text-secondary); }
  .btn--ghost:hover { background: var(--color-bg-sunken); color: var(--color-text-primary); }

  /* --- Dropzone grid --- */
  .upload-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
  .dropzone {
    border: 1px dashed var(--color-border-strong); background: var(--color-bg-surface-alt);
    border-radius: var(--radius-md); padding: var(--space-4);
    display: flex; flex-direction: column; gap: var(--space-2);
    min-height: 116px; cursor: pointer; transition: all var(--transition-fast);
  }
  .dropzone:hover { border-color: var(--color-accent); background: var(--color-accent-subtle); }
  .dropzone--filled {
    border-style: solid; border-color: var(--color-border); background: var(--color-bg-surface);
    cursor: default;
  }
  .dropzone__top { display: flex; justify-content: space-between; align-items: center; gap: var(--space-2); }
  .dropzone__title { font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold); }
  .dropzone__hint { font-size: var(--font-size-2xs); color: var(--color-text-muted); font-family: var(--font-family-mono); letter-spacing: var(--letter-spacing-caps); text-transform: uppercase; }
  .dropzone__file { font-size: var(--font-size-xs); font-family: var(--font-family-mono); color: var(--color-text-secondary); word-break: break-all; }
  .dropzone__meta { font-size: var(--font-size-2xs); color: var(--color-text-muted); font-family: var(--font-family-mono); margin-top: auto; }
  .dropzone__remove { border: 0; background: transparent; color: var(--color-text-muted); cursor: pointer; padding: 0 var(--space-1); font-size: var(--font-size-md); line-height: 1; }
  .dropzone__remove:hover { color: var(--color-status-error); }

  .dropzone__icon { width: 22px; height: 22px; color: var(--color-text-muted); }

  /* --- Two-col split --- */
  .split {
    display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4);
  }

  /* --- Chart bars (within forecast section) --- */
  .chart {
    display: flex; align-items: flex-end; gap: 4px; height: 96px;
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--color-divider);
    background: var(--color-bg-surface-alt);
  }
  .chart__col {
    flex: 1; display: flex; flex-direction: column-reverse; align-items: stretch;
    position: relative; min-width: 0;
  }
  .chart__bar { background: var(--color-text-secondary); border-radius: 1px 1px 0 0; min-height: 1px; opacity: 0.6; transition: height var(--transition-base); }
  .chart__bar--neg { background: var(--color-status-error); opacity: 0.85; }
  .chart__bar--pos { background: var(--color-accent); opacity: 0.85; }
  .chart__bar--past { opacity: 0.35; }
  .chart__label { position: absolute; bottom: -22px; left: 0; right: 0; text-align: center;
    font-size: var(--font-size-2xs); color: var(--color-text-muted); font-family: var(--font-family-mono);
  }
  .chart-wrap { padding-bottom: var(--space-6); position: relative; }

  /* --- Toast --- */
  .toast-region {
    position: fixed; bottom: var(--space-5); right: var(--space-5);
    display: flex; flex-direction: column; gap: var(--space-2); z-index: var(--z-toast);
  }
  .toast {
    display: flex; gap: var(--space-3); align-items: flex-start;
    background: var(--color-bg-surface); border: 1px solid var(--color-border);
    border-radius: var(--radius-md); padding: var(--space-3) var(--space-4);
    box-shadow: var(--shadow-md); min-width: 320px; max-width: 420px;
    border-left: 3px solid var(--color-status-warn);
    animation: toast-in 200ms ease-out;
  }
  @keyframes toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
  .toast__title { font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold); }
  .toast__msg   { font-size: var(--font-size-xs); color: var(--color-text-muted); margin-top: 2px; }
  .toast__close {
    border: 0; background: transparent; color: var(--color-text-muted); cursor: pointer;
    padding: 0; font-size: var(--font-size-lg); line-height: 1; align-self: flex-start;
  }
  .toast__close:hover { color: var(--color-text-primary); }

  /* --- Filter strip --- */
  .filter-strip {
    display: flex; gap: var(--space-3); align-items: center; flex-wrap: wrap;
  }
  .filter-strip .field__label {
    font-size: var(--font-size-2xs); font-weight: var(--font-weight-semibold);
    color: var(--color-text-muted); letter-spacing: var(--letter-spacing-caps); text-transform: uppercase;
    margin-right: var(--space-2);
  }
  .select-inline {
    height: 28px; padding: 0 var(--space-6) 0 var(--space-2);
    font-family: var(--font-family-sans); font-size: var(--font-size-xs); font-weight: var(--font-weight-medium);
    color: var(--color-text-primary); background: var(--color-bg-surface);
    border: 1px solid var(--color-border); border-radius: var(--radius-sm);
    appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path d='M1 1l4 4 4-4' stroke='%232e2f2f' stroke-width='1.4' fill='none'/></svg>");
    background-repeat: no-repeat; background-position: right var(--space-2) center;
  }
  .select-inline:focus { outline: none; border-color: var(--color-accent); box-shadow: var(--shadow-focus); }

  /* Responsive */
  @media (max-width: 1080px) {
    .shell { grid-template-columns: 1fr; grid-template-areas: "head" "main"; }
    .shell__side { display: none; }
    .upload-grid, .stats-row { grid-template-columns: 1fr 1fr; }
    .split { grid-template-columns: 1fr; }
  }
  @media (max-width: 720px) {
    .upload-grid, .stats-row { grid-template-columns: 1fr; }
    .main { padding: var(--space-5); }
  }

  /* --- Login (Two-Pane) ----------------------------------------------- */
  .login-screen { min-height: 100vh; background: var(--color-bg-app); display: grid; place-items: center; padding: var(--space-6); }
  .login {
    display: grid; grid-template-columns: 1fr 1fr; height: 480px; width: 100%; max-width: 880px;
    border: 1px solid var(--color-border); border-radius: var(--radius-lg);
    overflow: hidden; background: var(--color-bg-surface);
  }
  .login__pane { padding: var(--space-10); display: flex; flex-direction: column; justify-content: space-between; }
  .login__pane--dark { background: var(--color-bg-inverse); color: var(--color-text-on-inverse); }
  .login__pane--dark .login__logo { color: var(--color-text-on-inverse); }
  .login__logo { height: 40px; width: auto; display: block; align-self: flex-start; color: var(--color-text-primary); }
  .login__title { font-size: var(--font-size-2xl); font-weight: var(--font-weight-semibold); margin-bottom: var(--space-2); }
  .login__lead { color: var(--color-text-muted); font-size: var(--font-size-sm); margin-bottom: var(--space-6); max-width: 36ch; }
  .login__claim { font-size: var(--font-size-md); line-height: var(--line-height-snug); color: rgba(255,255,255,0.85); max-width: 28ch; }
  .login__meta { font-size: var(--font-size-xs); color: rgba(255,255,255,0.45);
    font-family: var(--font-family-mono); letter-spacing: var(--letter-spacing-caps); text-transform: uppercase;
  }
  .btn--ms {
    background: var(--color-bg-surface); color: var(--color-text-primary);
    border: 1px solid var(--color-border-strong); height: 44px; padding: 0 var(--space-4);
    width: 100%; justify-content: flex-start; gap: var(--space-3); font-weight: var(--font-weight-medium);
    display: inline-flex; align-items: center; border-radius: var(--radius-md); cursor: pointer; font: inherit; font-size: var(--font-size-sm);
  }
  .btn--ms:hover { background: var(--color-bg-sunken); }
  .ms-logo { width: 18px; height: 18px; display: inline-block; flex-shrink: 0; }
  .field__hint { font-size: var(--font-size-xs); color: var(--color-text-muted); }

  /* Mobile: Login einspaltig */
  @media (max-width: 720px) {
    .login { grid-template-columns: 1fr; height: auto; }
    .login__pane--dark { padding: var(--space-8); }
  }

  /* --- Feedback Floating Button + Chat Modal --------------------------- */
  .feedback-fab {
    position: fixed; right: var(--space-5); bottom: var(--space-5);
    background: var(--color-accent); color: #fff;
    border: 0; border-radius: 999px;
    padding: 10px 18px 10px 14px;
    font: inherit; font-size: var(--font-size-sm); font-weight: var(--font-weight-medium);
    display: inline-flex; align-items: center; gap: var(--space-2);
    cursor: pointer; box-shadow: 0 6px 20px rgba(26,26,26,0.18);
    z-index: 90; transition: background var(--transition-fast), transform var(--transition-fast);
  }
  .feedback-fab:hover { background: var(--color-accent-hover); transform: translateY(-1px); }
  .feedback-fab:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
  .feedback-fab__icon { width: 18px; height: 18px; }

  .feedback-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.45);
    display: grid; place-items: center;
    z-index: 110;
    padding: var(--space-6);
  }
  .feedback-overlay.hidden { display: none; }

  .feedback-card {
    background: var(--color-bg-surface);
    border-radius: var(--radius-lg);
    width: 100%; max-width: 600px; max-height: 86vh;
    display: flex; flex-direction: column;
    box-shadow: 0 16px 60px rgba(0,0,0,0.25);
    overflow: hidden;
  }
  .feedback-card__head {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--color-divider);
    display: flex; justify-content: space-between; align-items: center;
  }
  .feedback-card__title { font-size: var(--font-size-md); font-weight: var(--font-weight-semibold); }
  .feedback-card__lead { font-size: var(--font-size-xs); color: var(--color-text-muted); margin-top: 2px; }
  .feedback-card__body { padding: var(--space-4) var(--space-5); overflow-y: auto; flex: 1; }
  .feedback-card__foot {
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--color-divider);
    background: var(--color-bg-surface-alt);
  }

  .chat-log { display: flex; flex-direction: column; gap: var(--space-3); }
  .chat-msg { max-width: 92%; padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); font-size: var(--font-size-sm); line-height: var(--line-height-snug); white-space: pre-wrap; }
  .chat-msg--user { align-self: flex-end; background: var(--color-accent-subtle); color: var(--color-text-primary); border: 1px solid var(--color-accent); }
  .chat-msg--assistant { align-self: flex-start; background: var(--color-bg-surface-alt); color: var(--color-text-primary); border: 1px solid var(--color-border); }
  .chat-msg--system { align-self: center; background: transparent; color: var(--color-text-muted); font-size: var(--font-size-xs); font-style: italic; padding: var(--space-1) var(--space-2); }
  .chat-msg--loading { color: var(--color-text-muted); font-style: italic; }

  .chat-input-wrap { display: flex; gap: var(--space-2); align-items: stretch; }
  .chat-input {
    flex: 1; resize: vertical; min-height: 60px; max-height: 200px;
    font: inherit; font-size: var(--font-size-sm);
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-input-border); border-radius: var(--radius-md);
    background: var(--color-input-bg); color: var(--color-text-primary);
  }
  .chat-input:focus { outline: none; border-color: var(--color-accent); box-shadow: var(--shadow-focus); }
  .chat-input:disabled { background: var(--color-bg-sunken); cursor: wait; }

  .feedback-preview {
    background: var(--color-bg-surface-alt); border: 1px solid var(--color-border);
    border-radius: var(--radius-md); padding: var(--space-4);
    margin-top: var(--space-3);
  }
  .feedback-preview__label { font-size: var(--font-size-2xs); font-weight: var(--font-weight-semibold);
    color: var(--color-text-muted); text-transform: uppercase; letter-spacing: var(--letter-spacing-caps);
    margin-bottom: var(--space-1);
  }
  .feedback-preview__subject { font-weight: var(--font-weight-semibold); margin-bottom: var(--space-3); }
  .feedback-preview__body { font-size: var(--font-size-sm); white-space: pre-wrap; font-family: var(--font-family-sans); color: var(--color-text-secondary); }
  .feedback-actions { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-top: var(--space-3); }
  .feedback-hint { font-size: var(--font-size-xs); color: var(--color-text-muted); margin-top: var(--space-2); }